It's because of IME, not browser or addon, sorry.
(X)Can not named the group...Ubuntu1404(x64) and FF57.

I've been using OneTab, it was great until I've lost all the tabs (300+ of them) suddenly. I'm not entirely sure why this happenned, my FireFox is version 48.02 as I haven't been able to update it since my Mac OS has become outdated. Maybe the OneTab has become too new for my browser? I now see the "file not found" page on my OneTab tab, and I can no longer see the icon of OneTab either on the toolbar or in the list of add on-s...

very nice

Really useful! I love it!
(My only complain: it doesn't on Firefox 57 for Android)

Great addon. Very usefull. I backup the list of urls now and then to be safe, but it works fine for me.

It could use more user friendliness like shortcuts for more actions or more options to arrange the urls in the list and behavious of the groups.

Please cooperate with these guys, gestures would be very usefull.
https://github.com/marklieberman/foxygestures/issues/146
https://github.com/Robbendebiene/Gesturefy/issues/135

Extensão muito boa, uso a toda hora e me economiza memória.

Boom

終了時に保存してくれるといいなぁ。

I just clicked the button while watching Resource Monitor, my used memory drop by half. I think i'm in love.

This is one of my all time favorite extensions; on both firefox and chrome.

I think this is a great replacement for Tab Groups (the original Firefox version that was deprecated and the great add-on by Quicksaver that has gone extinct).

I wish we could click to drop down the icon on the toolbar to switch between named groups like we could in the Quicksaver version. The ability to save the entire set dynamically (without having to import and export) and switch between them like with Session Manager would be awesome as well.

The context menus are great and have a lot of options for grabbing sets of tabs to add to the list.

I did not use this add-on in FF56, so I can't speak to the upgrade path, but it seems as though they have instructions to follow for downgrading.

Works flawlessly so far with the new WebExtensions. Only thing would be an option to secure it with a cloud like DropBox if any browser loss would occur And an option to sort the tabs by name, date, url would be practical. Otherwhise good one.

Lost all my tabs, it didnt just not work, it actively ruined my browser organization.

This add-on is not ready for Quantum. When i Installed it crashed not only my firefox but also whole machine.
In Proccess Explorer Firefox had take in seconds whole 8 GB memory of my Computer without finally creates the onetab bar with me 230+ allready opened tabs. I gave it more than 20 minutes to work for build the bar but fatally didn;t make it.

I had to open task manager to kill the proccess tree of firefox for about 3 times, cause even after the first tries to kills the firefox proccess when i repopened it crashed again. Finally among 3th restart of firefox after a machine restrat it gave me some time to prior uninstall the addon and release the browser from this memory killer. Thanx Luck...i had install the session manager, cause after all these problems finally it had lost all my tabs from tabbar. I restored a previous session of past day and saved my tabs.

I hope they resolve the problem cause, it makes BIG problem to users.

I have only Tab Session Manager active and new tab tool not active

Great addon BUT after Firefox updating to the last version it not working and seems that my all tab history erased!!! The store.json frile is almost empty and there are no saved tabs there!